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Earnings per Share (Tables)
 3 Months Ended
Jul. 31, 2012
Earnings Per Share [Abstract]  
Schedule of Earnings Per Share, Basic, by Common Class, Including Two Class Method [Table Text Block]
 
2012
2011
Net earnings (loss)
$
84,000

$
(259,000
)
Amounts allocated to participating securities (nonvested restricted shares)
(4,000
)
—

Net income (loss) attributable to common shareholders 
$
80,000

$
(259,000
)
Basic weighted average common shares
5,265,750

5,265,750

Earnings (loss) per share attributable to common shareholders:
 

 
Basic earnings (loss) per share
$
0.02

$
(0.05
)